@misc{rfc1869,
    series =    {Request for Comments},
    number =    1869,
    howpublished =  {RFC 1869},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC1869},
    url =       {https://www.rfc-editor.org/info/rfc1869},
    author =    {Dave Crocker and Dr. John C. Klensin and Einar A. Stefferud and Dr. Marshall T. Rose and Ned Freed},
    title =     {{SMTP Service Extensions}},
    pagetotal = 11,
    year =      1995,
    month =     nov,
    abstract =  {This memo defines a framework for extending the SMTP service by defining a means whereby a server SMTP can inform a client SMTP as to the service extensions it supports. {[}STANDARDS-TRACK{]}},
}